145512173 has 2 divisors, whose sum is σ = 145512174. Its totient is φ = 145512172.

The previous prime is 145512151. The next prime is 145512209. The reversal of 145512173 is 371215541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76073284 + 69438889 = 8722^2 + 8333^2 .

It is a cyclic number.

It is not a de Polignac number, because 145512173 - 2²⁰ = 144463597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145512373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72756086 + 72756087.

It is an arithmetic number, because the mean of its divisors is an integer number (72756087).

Almost surely, 2^145512173 is an apocalyptic number.

It is an amenable number.

145512173 is a deficient number, since it is larger than the sum of its proper divisors (1).

145512173 is an equidigital number, since it uses as much as digits as its factorization.

145512173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 29.

The square root of 145512173 is about 12062.8426583455. The cubic root of 145512173 is about 525.9766226412.

The spelling of 145512173 in words is "one hundred forty-five million, five hundred twelve thousand, one hundred seventy-three".